package com.itheima.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;

import com.itheima.reggie.dto.DishDto;

import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.DishFlavor;
import com.itheima.reggie.mapper.DishMapper;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.DishFlavorService;
import com.itheima.reggie.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;
import java.util.stream.Collectors;

@Service
@Slf4j
public class DishServiceImpl extends ServiceImpl<DishMapper, Dish> implements DishService {
    @Autowired
    private DishFlavorService dishFlavorService;
    @Autowired
    private CategoryService categoryService;
    @Autowired
    private DishService dishService;
    /**
     * 新增菜品，同时保存对应的口味数据
     * @param dishDto
     */
    @Override
    //添加事务
    @Transactional
    public void saveWithFlavor(DishDto dishDto) {
        //保存菜品的基本信息到菜品表 ：dish
        this.save(dishDto);
        //获取菜品id
        Long dishId = dishDto.getId();
        //菜品口味
        List<DishFlavor> flavors = dishDto.getFlavors();
        //通过stream流来处理集合
        flavors = flavors.stream().map((item)->{
            //item表示每一个获取到的实体对象
            //给实体对象设置id
            item.setDishId(dishId);
            return item;
        }).collect(Collectors.toList());  //.collect(Collectors.toList()) 重新转换成list集合

        //保存菜品口味数据信息到菜品口味表：dish_flavor
        dishFlavorService.saveBatch(flavors);

    }

    //根据id查询菜品信息和对应的口味信息
    @Override
    public DishDto getByIdWithFlavor(Long id) {
        //查询菜品的基本信息
        Dish dish = this.getById(id);
        //查询菜品的口味信息
        LambdaQueryWrapper<DishFlavor> queryWrapper = new LambdaQueryWrapper<>();
        //添加条件
        queryWrapper.eq(DishFlavor::getDishId,dish.getId());
        //查询口味信息
        List<DishFlavor> flavors = dishFlavorService.list(queryWrapper);
        //创建DishDto对象
        DishDto dishDto = new DishDto();
        //把dish菜品信息拷贝到dishDto中
        BeanUtils.copyProperties(dish,dishDto);
        //设置dishDto的口味数据
        dishDto.setFlavors(flavors);
        return dishDto;
    }

    /**
     * 更新菜品信息
     * @param dishDto
     */
    @Override
    @Transactional
    public void updateWithFlavor(DishDto dishDto) {
        //更新dish表基本信息
        this.updateById(dishDto);

        //清理当前菜品对应口味数据---dish_flavor表的delete操作
        LambdaQueryWrapper<DishFlavor> queryWrapper = new LambdaQueryWrapper();
        queryWrapper.eq(DishFlavor::getDishId,dishDto.getId());

        dishFlavorService.remove(queryWrapper);

        //添加当前提交过来的口味数据---dish_flavor表的insert操作
        List<DishFlavor> flavors = dishDto.getFlavors();

        flavors = flavors.stream().map((item) -> {
            item.setDishId(dishDto.getId());
            return item;
        }).collect(Collectors.toList());

        dishFlavorService.saveBatch(flavors);
    }

    /**
     * 批量删除菜品信息
     * @param ids
     */
    /*@Override
    public void reoveIds(List<Long> ids) {

        for (Long id : ids) {
            this.removeById(id);
            LambdaQueryWrapper<DishFlavor> queryWrapper = new LambdaQueryWrapper<>();
            queryWrapper.eq(DishFlavor::getId,getById(id));
            super.removeById(id);
        }
    }*/

    /**
     * 菜品起售，停售
     * @param status
     * @param ids
     */
    /*@Override
    public void updateStatus(Integer status, List<Long> ids) {
        for (Long id : ids) {
            Dish dish = dishService.getById(id);
            dish.setStatus(status);
            super.updateById(dish);
        }
        }*/
    }
